Supermassive black hole, lighter than air

Neutronium, or perhaps quark matter, may be the densest form of matter in the cosmos, but it is probably not what the densest object is made of. Compress a neutron star even further, and it will turn into a black hole. Not that all black holes are particularly dense: in fact the big ones, as measured by their event horizons, are quite tenuous. A supermassive black hole in the nearby galaxy M87 has a mass 6.4 billion times that of our sun but a density of only 0.37 kilograms per cubic metre, making it lighter than air. [bron]


4 thoughts on “Supermassive black hole, lighter than air

  1. Kan je iets meer toelichten hoe dat zit? De bron, newscientist, wil dat ik eerst inlog

Geef een reactie

Vul je gegevens in of klik op een icoon om in te loggen. logo

Je reageert onder je account. Log uit /  Bijwerken )

Google+ photo

Je reageert onder je Google+ account. Log uit /  Bijwerken )


Je reageert onder je Twitter account. Log uit /  Bijwerken )

Facebook foto

Je reageert onder je Facebook account. Log uit /  Bijwerken )


Verbinden met %s